Character not moving with bones
First of all, you need to join all this character's meshes into one object by selecting them all then pressing ctrl+J. This will confuse the normals, so in edit mode select all then press ctrl+N. The armature and mesh need to share the same origin point. Press ctrl+S to snap the cursor to the center. Select the mesh and press ctrl+alt+shift+C. Do the same with the armature. Meshes downloaded from the Internet or generated from a different program can have some funky reactions when they're parented to a rig. I'm not sure why that is, but to fix it, you can scale down the mesh in object mode then apply the transformation by pressing Ctrl+A. Automatic weights aren't always guaranteed to work properly, especially if it has to deform an object made of separate meshes. You'll have to manually weight it. Be sure to convert those tris to quads (ctrl+F) to make that process easier. Cut down on those vertebrae too- only two to four are really necessary. Hope this helped.